Application Notes: 23 Spline Front External Shaft, W/Diesel, 727 Trans., Direct Mount. ASSM# 4202739, 4202740, 4340291, 4340292, 4428003, 4428490, 52097603, 52097604, 52097605, 52097711. 23 External Splined Input, Direct Mount, With Dana 60 front axle, Diesel Engine With Automatic Transmission, Tag Numbers: 4340291, 4340292, 4428003, 4428490, 52097603, 52097604, 52097605, 52097711, Hollander Number: 412-219, Other Numbers: UMT305.
Remanufacturing Process
Every transfer case we sell is fully remanufactured to meet or exceed OEM specifications. Our remanufacturing process:
- Deep Clean – To start the remanufacturing process, each transfer case is fully disassembled and cleaned
- Inspection – Each transfer case is carefully inspected for cracks, excessive wear, shaft warp, and chain stretch
- New Components – All seals, bearings, joints and rings are replaced as well as electrical components (solenoids and control units)
- Validation – After reassembly, each individual transfer case is spin tested as part of a detailed checklist validation process
Every unit is fully remanufactured and covered against defects in materials and workmanship. Email us to confirm the current warranty term for this unit before purchase.

